ViewSonic VX1935wm-1 Servise Manual
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ViewSonic VX1935wm-1 Servise Manual

19” color tft lcd display
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Service Manual

ViewSonic VX1935wm-1
Model No. VS11307
19" Color TFT LCD Display
(VX1935wm-1_SM Rev. 1a Sep. 2006)
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

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Summary of Contents for ViewSonic VX1935wm-1

  • Page 1: Service Manual

    Service Manual ViewSonic VX1935wm-1 Model No. VS11307 19” Color TFT LCD Display (VX1935wm-1_SM Rev. 1a Sep. 2006) ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583...

  • Page 2: Revision History

    Further, ViewSonic reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of ViewSonic to notify any person of such revision or changes.

  • Page 3: Table Of Contents

    Specification Front Panel Function Control Description Circuit Description Adjustment Procedure Troubleshooting Flow Chart Recommended Spare Parts List Exploded Diagram and Exploded Parts List Block Diagram 10. Schematic Diagrams 11. PCB Layout Diagrams ViewSonic Corporation VX1935wm-1 Confidential - Do Not Copy...

  • Page 4: Precautions And Safety Notices

    4. Power Supply Requirements The external AC power operating range shall be from 90 to 264Vac ViewSonic Corporation VX1935wm Confidential - Do Not Copy...
  • Page 5 Power Source, or be applied exemption. (14) The LCD module is designed so that the CFL in it is supplied by Limited Current Circuit. Do not connect the CFL in Hazardous Voltage Circuit. ViewSonic Corporation VX1935wm Confidential - Do Not Copy...
  • Page 6 3.Place the monitor on a clean and soft foam 3.Placing the monitor on foreign objects. That pad. could scratch the surface of the panel or cause “Mura”. ViewSonic Corporation VX1935wm Confidential - Do Not Copy...

  • Page 7: Specification

    ≦ 8% (Maxmum output @ 1KHZ) Signal to Noise Ratio 50 dB Frequency response 500 Hz – 20 Khz SPL. 80 ± 3 dB / 10.W‧0.5m 3.5 mm stereo jacks Line input connection ViewSonic Corporation VX1935wm Confidential - Do Not Copy...
  • Page 8 Typical = 5ms (Tr = ms,Tf = 10%-90% @ Ta=25°C Maxmum = 10ms (Tr = ms,Tf = Panel Defects Please see Panel Quality Specifications. *1 Test conditions: Inverter Current=6.5mA, Color Temp.=User Mode, OSD: Brightness=100%, Contrast=100% ViewSonic Corporation VX1935wm Confidential - Do Not Copy...

  • Page 9: Timing Table

    Performance no 35 1280×960 @50Hz 49.405 49.853 83.000 P 1680 128 200 1280 72 991 guarantee 36 1280×960 @60Hz 60.000 60.000 108.000 P 1800 112 312 1280 96 1000 3 36 960 ViewSonic Corporation VX1935wm Confidential - Do Not Copy...
  • Page 10 ● Under DOS mode (640 x 350, 720 x 400 & 640 x 400), it should recall factory setting when execute “Auto Image Adjust” ● The monitor needs to do “Auto Adjust” the first time when a new mode is detected(See section “0-Touch™ Function Actions”) ViewSonic Corporation VX1935wm Confidential - Do Not Copy...

  • Page 11: Front Panel Function Control Description

    [▲] Up Arrow Button Note: Power Button, Button 1 and Button 2 must be one-shot logic operation. (i.e. there should be no cycling) Reaction Time OSD must fully appear within 0.5s after pushing Button 1 ViewSonic Corporation VX1935wm Confidential - Do Not Copy...
  • Page 12 REMARK: There may need to select “Fine Tune” function on “Manual Image Adjust” to optimized Performance for various VGA tolerance. Contrast / Brightness : To adjust the Contrast of the video and the backlight currency. ViewSonic Corporation VX1935wm Confidential - Do Not Copy...
  • Page 13 To select the signal sources of the Analog or Digital. Audio Adjust : To adjust the audio volume and mute. Color Adjust : To select the color temperature sRGB, 9300°K, 7500°K ,6500°K, 5400°K or user color. ViewSonic Corporation VX1935wm Confidential - Do Not Copy...
  • Page 14 Horizontal Size: To adjust the horizontal pixel clock of the video. H./V. Position: To adjust the horizontal and vertical position of the video. Fine Tune: To adjust the delay time of data and clock. Sharpness: To select the picture sharpness of display. ViewSonic Corporation VX1935wm Confidential - Do Not Copy...
  • Page 15 OSD Timeout: To set the displaying time of OSD. OSD Background :To select video background brightness. Memory Recall: Restore default settings of Clock, H./V. Position, Phase, Contrast, Brightness, Color temperature, OSD position, OSD timeout and Sharpness, Volume. ViewSonic Corporation VX1935wm Confidential - Do Not Copy...

  • Page 16: Circuit Description

    LCD monitors with resolutions up to WXGA. It is configured with an integrated triple-ADC/PLL, a high quality scaling engine, an on-screen display controller, a built-in output clock generator, and LVDS display interface. To further reduce system costs, the TSUM17AK also integrates intelligent power management . ViewSonic Corporation VX1935wm Confidential - Do Not Copy...

  • Page 17: Adjustment Procedure

    Vertical of video should be adjustable to Thickness be within the screen frame. RGB Color RGB Color Contrast of each R, G, B, color Figure 4, 5, Performance Intensities should be normal. ViewSonic Corporation VX1935wm Confidential - Do Not Copy...
  • Page 18 Fine Line Morie Pattern (Figure1) Gray Scale Pattern (Figure2) Horizontal & Vertical Thickness Pattern R. Color Pattern (Figure 4) (Figure 3) G. Color Pattern (Figure5) B. Color Pattern (Figure 6) ViewSonic Corporation VX1935wm Confidential - Do Not Copy...
  • Page 19 Test Pattern: Burn In Mode (Refer to Chapter 3-1. Hot Keys for Function Controls) - Make sure the F/W is the latest version. 1.5.4 DDC Test Pattern: EDID program - Make sure it can pass test program. 1.5.5 Fine Tune and Sharpness ViewSonic Corporation VX1935wm Confidential - Do Not Copy...
  • Page 20 - Make sure there is audio output. - Make sure that audio function (volume≦80%) is working without noise and resonance. - Make sure that the sound of right and left speakers are in balance. ViewSonic Corporation VX1935wm Confidential - Do Not Copy...
  • Page 21 - Fixture for Firmware Upgrade - VGA Cable - PC (Personal Computer) - ISP Tool - Firmware Upgrade Program - One additional monitor for checking the program execution ISP tool instruction 15 pin D-Sub LPT cable ViewSonic Corporation VX1935wm Confidential - Do Not Copy...
  • Page 22 ISP tool Use 12V adapter ISP connect method ISP Download program procedure Hardware Connect status: ViewSonic Corporation VX1935wm Confidential - Do Not Copy...
  • Page 23 AR : Analog /RSDS DR : Analog + Digital / RSDS Panel type : 150MX17A01 Firmware version : R30.2 Change Panel (Version update) 1. Check : Monitor model 2. Check : Firmware version ViewSonic Corporation VX1935wm Confidential - Do Not Copy...
  • Page 24 (ps.2) If change panel : (Form HSD150MX17A00 change to HSD150MX17A01) Panel type : 150MX17A00 => 150MX17A01 Firmware change : HC154_AL_150MX17A00R30.2 => HC154_AL_150MX17A01R30.2 5. Update final firmware version : HC154_AL_150MX17A01R30.3 6. Update EDID code : HC154_150MX17A01_EDID_A.txt ViewSonic Corporation VX1935wm Confidential - Do Not Copy...
  • Page 25 DR : Analog + Digital / RSDS Panel type : 150MX17A01 Firmware version : R30.2 3. Change scaler board. 4. Update final firmware version : HC154_AL_150MX17A01R30.3 5. Update EDID code : HC154_150MX17A01_EDID_A.txt ViewSonic Corporation VX1935wm Confidential - Do Not Copy...
  • Page 26 3. Enforce Mstar ISP Utility Window's Connect function, and Device Type's Dialog window will be opened ,then press "Sure " on Dialog window. 4. Enforce Mstar ISP Utility window 之 Read function. ViewSonic Corporation VX1935wm Confidential - Do Not Copy...
  • Page 27 6. Choose the path and file of Binary code ,and Program Bin Ready Dialog window will be opened, then press "Sure" on Dialog window. 7. Enforce Mstar ISP Auto function of Utility window. ViewSonic Corporation VX1935wm Confidential - Do Not Copy...
  • Page 28 8. Enforce Mstar ISP Utility window "Run"and write in the data . 9. After writing in the data , Enforce Dis Connect function of Mstar ISP Utility window and the burn in procedure will be completed. ViewSonic Corporation VX1935wm Confidential - Do Not Copy...

  • Page 29: Ddc Key In Procedure

    - PC - RS232 cable - VGA Cable or DVI Cable DDC Card (D8330) RS-232 Cable VGA Cable Step 1 : Select VA903b in Working Model column to show EDID data on left ViewSonic Corporation VX1935wm Confidential - Do Not Copy...
  • Page 30 Step 2 : Modify the column of Week of Manufacture and Year of Manufacture and ID serial Number then press “2B” button for changing serial number data. Step 3 : You will see the result as follows. ViewSonic Corporation VX1935wm Confidential - Do Not Copy...
  • Page 31 (Figure 5 ~ 6) User’s manual / Warranty card / CD package Base short side turn upward Panel side forward D-Sub/ DVI Power Code / cables Audio Cable (Figure 5) (Figure 6) ViewSonic Corporation VX1935wm Confidential - Do Not Copy...
  • Page 32 1.1 Detach Base Unit from the monitor. 1.2 Remove the ARM cover. 1.3 Unfasten six screws to remove the ARM. 2. Disassembly of Front Cover and Rear Cover 2.1 Unscrew ten screws to remove Rear Cover. ViewSonic Corporation VX1935wm Confidential - Do Not Copy...
  • Page 33 2.2 Unfasten four screws to remove Hinge folder bracket. 2.3 Unfasten six screws to remove the D-sub / DVI connector and Power socket. 2.4 Unfasten five screws and disconnect Inverter cables from panel to remove the shielding. ViewSonic Corporation VX1935wm Confidential - Do Not Copy...
  • Page 34 2.5 Unfasten four screws to remove the Keypad board. 2.6 Unfasten eight screws to remove Power Inverter board and D-sub/DVI connect board. Power Inverter Board D-sub/DVI connect board Cables 2.7 Remove the Front Bezel. ViewSonic Corporation VX1935wm Confidential - Do Not Copy...

  • Page 35: Troubleshooting Flow Chart

    Please change panel line or vertical line The backlight is OFF Please check inverter wire if properly connected Please change panel or P/I/A board (ps) Display panel have block bar Please change panel ViewSonic Corporation VX1935wm Confidential - Do Not Copy...
  • Page 36 Please check if panel wire is loose connection or not Please change panel Audio output error Please change P/I/A board (ps) (ps) : P/I/A board Power/Inverter/Audio board ViewSonic Corporation VX1935wm Confidential - Do Not Copy...

  • Page 37: Recommended Spare Parts List

    Remark 2: All revised RSPLs with newly added items or any change made should be highlighted and correlated with the ECN/ECR approved by ViewSonic Corporation. This is to eliminate repeated cross checks of each item between this version and prior versions.
  • Page 38 BOM LIST ( VX1935wm-1 ) ViewSonic Model Number: VS11307 Serial No. Prefix: Q8Y Rev: 1a Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 72-01193502G000 VX1935 China Packing assy A-00008042 72-01193501G000 VX1935 USA Packing assy 70-VX193500G000 VX1935 KEY BOARD ASS’Y (Lead Free)
  • Page 39 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 39-VX193500G000 VX1935 Key Board PCB Ver : 2.0 34-04170017G000 AL Foil W40*L200*T0.1mm 33-R3910506G000 CABLE STEREO PHONE(JHEN VEI) 33-R3910503G000 DVI CABLE 1800MM(JHEN VEI) 33-R3910501G000 CABLE SIGNAL D/15P-15P(M)1800MM-JHEN VEI 33-E3980005G000 PWR CORD CHN 250V/10A 1.8M 3C BLK"Linetek"...

  • Page 40: Exploded Diagram And Exploded Parts List

    8. Exploded Diagram and Exploded Parts List ViewSonic Corporation VX1935wm-1 Confidential - Do Not Copy...
  • Page 41 40-11010001G000 VX1935wm Base_cover ABS-HB Silver 41-03010037G000 HX191_WALL MOUNT_BRACKET 41-03010052G000 VX1935M KEY LOCK BRACKET SECC PL-00008002 42-04170008G000 Name plate Brand for Viewsonic AL 43-01030802G000 SCREW M3x4 PAN,NI,ME 43-01040604G000 SCREW M4*6 PAN BZ ME 43-04030802G010 SCREW M3*8 FLAT NI TAP 43-90000066G410 SCREW M3x8 PHW LW CR3/BL TAP...
  • Page 42 PACKING PART LIST (VX1935wm-1 ) ViewSonic Model Number: VS11307 Rev: 1a Item ViewSonic P/N Ref. P/N Location Q'ty 62-04000012G000 VX1935 CD User Guide 33-R3910501G000 CABLE SIGNAL D/15P-15P(M)1800MM-JHEN VEI 33-R3910503G000 DVI CABLE 1800MM(JHEN VEI) 33-R3910506G000 CABLE STEREO PHONE(JHEN VEI) A-00008004 33-E3980011G000 PWR CORD TWN 125V/7A 1.8M 3C BLK "Linetek"...

  • Page 43: Block Diagram

    BL-BRIGHT DC-DC U402-1084-18PM TSUM17AK 1.8V AUDIO OSC 12M EEPROM INPUT 24C16 Flash SST25VH010 H、SYNC R、G、 U501 V、SYNC BINPUT U601 24C02 24C02 H、V SYNC TMDS SYNC VGA D-SUB SCL_DVI、SDA_DVI SCL、SDA DVI5V VGA 5V ViewSonic Corporation VX1935wm-1 Confidential - Do Not Copy...

  • Page 44: Schematic Diagrams

    10. Schematic Diagrams ON/OFF IC_VCC IC_VCC CN1B DBRT ENSYNC CN1A ABRT OUTL DBRT VCCL CN2A OUTR COMP CN2B VCCR JP10 IC_VCC ViewSonic Corporation Model INVERTER Title Date Rev: ViewSonic Corporation VX1935wm-1 Confidential - Do Not Copy...
  • Page 45 Ilimit Drain R241 R235 C243 C242 R240B D120 L120 C240 9.10 R230 R234 PC201B PC201A ZD121 C120 R231 C231 R232 C232 IC230 R233 CY103 ViewSonic Corporation Model OPEN FRAME Title Date Rev: ViewSonic Corporation VX1935wm-1 Confidential - Do Not Copy...
  • Page 46 STBY VAROUT_R R504 R505 C511 C512 VAROUT_L MUTE R506 R507 C503 R508 R509 AUDIO_STBY AUDIO_STBY AUDIO_MUTE AUDIO_MUTE R503 R510 R512 R511 Q501 C506 Volume Volome ViewSonic Corporation Model AUDIO Title Date Rev: ViewSonic Corporation VX1935wm-1 Confidential - Do Not Copy...
  • Page 47 GPIO_P14 3.3V 0.1uF/16V iris suggestion TP10 TP11 TP12 DDCROM_SCL 2005/01/11 DDCROM_SDA 220K 1/16W VOLUME 1/16W 1/16W 4.7K 1/16W PMBS3904 AMP_MUTE AMP_STBY 0.1uF/16V 1/16W 1/16W AT24C16N-10SC-2.7 ViewSonic Corporation Model SCALER Title Date Rev: ViewSonic Corporation VX1935wm-1 Confidential - Do Not Copy...
  • Page 48 U102 R124 VFLK R119 VGH_M 2K(0603) 1% VDPM MMBT3904 1K(0402) 1% R122 15K(0402) 1% Q102 VGH_M VGH_M R116 KIA3820FK ViewSonic Corporation 0 (0603) R121 C126 C127 R123 NC(0603) R115 R117 13K (0603) 47pF(0402) Model 1K (0603) 15K (0603) DC-DC C123...
  • Page 49 R223 23.2 1% 56.2 45.3 69.8 26.7 95.3 54.9 57.6 95.3 C211 C212 C213 C214 C215 C216 C217 C218 C219 C220 C221 C222 C223 C224 ViewSonic Corporation Model VGMA Title Date Rev: ViewSonic Corporation VX1935wm-1 Confidential - Do Not Copy...
  • Page 50 D12P D20N D20N D20N D20P D20P D20P D21N D21N D21N D21P D21P D21P BB[0..5] D22N BB[0..5] D22N BB[0..5] D22N ViewSonic Corporation D22P D22P D22P EIO2 EIO2 EIO2 3V3_X VDDD 3V3_X VDDD 3V3_X VDDD VSSD VSSD VSSD VCOM 4S720 VCOM 5S720...
  • Page 51 0.1uF/16V STBY R413 4.7K 1/16W R428 0.1uF/16V C422 R429 C418 R427 4.7K 1/16W Q406 C419 BL_BRIGHT 10K 1/16W R426 PMBS3904 AMP_STBY 10uF/16V 0.1uF/16V 1uF/16V Q405 ViewSonic Corporation Model POWER Title Date Rev: ViewSonic Corporation VX1935wm-1 Confidential - Do Not Copy...
  • Page 52 DDC_VDD VGA-VDD FB503 C506 VGA_HS R515 1/16W 0.1uF/16V 120ohm R508 R509 R512 VGA_VS R516 1/16W U501 AT24C02 C507 C508 ViewSonic Corporation 24C02_WP 33pF 220pF DDC_WP R510 1/16W DDC_SCL SCLK R511 1/16W DDC_SDA Model R522 1/16W VGA INPUT Title Date Rev:...
  • Page 53 BAV99 4.7K 1/16W DVI5V C603 C604 C605 C606 C607 C608 C609 C610 C601 D613 NC/0.1uF NC/0.1uF NC/0.1uF NC/0.1uF NC/0.1uF NC/0.1uF NC/0.1uF NC/0.1uF 0.1uF UDZS5.6B CONN ViewSonic Corporation Model DVI-IN Title Date Rev: ViewSonic Corporation VX1935wm-1 Confidential - Do Not Copy...

  • Page 54: Pcb Layout Diagrams

    11. PCB Layout Diagrams TOP SIDE ViewSonic Corporation VX1935wm-1 Confidential - Do Not Copy...
  • Page 55 BOTTOM ViewSonic Corporation VX1935wm-1 Confidential - Do Not Copy...
  • Page 56 SILKSCREEN-BOTTOM ViewSonic Corporation VX1935wm-1 Confidential - Do Not Copy...
  • Page 57 SILKSCREEN-TOP ViewSonic Corporation VX1935wm-1 Confidential - Do Not Copy...
  • Page 58 MASK-TOP ViewSonic Corporation VX1935wm-1 Confidential - Do Not Copy...
  • Page 59 MASK-BOTTOM ViewSonic Corporation VX1935wm-1 Confidential - Do Not Copy...
  • Page 60 SMD-TOP ViewSonic Corporation VX1935wm-1 Confidential - Do Not Copy...
  • Page 61 DRILL DRAWING ViewSonic Corporation VX1935wm-1 Confidential - Do Not Copy...
  • Page 62 ViewSonic Corporation VX1935wm-1 Confidential - Do Not Copy...
  • Page 63 ViewSonic Corporation VX1935wm-1 Confidential - Do Not Copy...
  • Page 64 ViewSonic Corporation VX1935wm-1 Confidential - Do Not Copy...
  • Page 65 ViewSonic Corporation VX1935wm-1 Confidential - Do Not Copy...
  • Page 66 ViewSonic Corporation VX1935wm-1 Confidential - Do Not Copy...
  • Page 67 ViewSonic Corporation VX1935wm-1 Confidential - Do Not Copy...
  • Page 68 Company: Add: Tel: Fax: E-mail: After completing this form, please return it to ViewSonic Quality Assurance in the USA at facsimile 1-909-839-7943. You may also e-mail any suggestions to the Director, Quality Systems & Processes (marc.maupin@viewsonic.com) ViewSonic Corporation VX1935wm-1 Confidential - Do Not Copy...

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